Concrete-mixer.



K-WELCKER CONCRETE MIXER.

APPLICATION FILED MAR.I9.I9I2.

1, 182,065, Patented May 9, 1916.

ITNESSES: INVENTOR RUDOLPH WELCKER ATTORNEY UNITED STATES PATENT OFFICE.

RUDOLPH WELCKER, OF YONKERS, NEW YORK.

CONCRETE-MIXER.

Specification of Letters Patent.

Application filed March 19, 1912. Serial No. 684.827.

To all whom it may concern Be it known that I, RUDOLPH WELCKER, a subject of the Queen of the Netherlands, residing at Bronx Manor, city of Yonkers, county of'VVestchester, State of New York, United States of America, have invented a new and useful Concrete-Mixer; and I do hereby declare the fOlloWing to be a full, clear, and exact description of the same.

The present improvements, in apparatus for mixing and delivering concrete materials, relate to new combination of parts whereby, in the preferred form, the one apparatus is employed to mix the concrete, this being accomplished while the apparatus is being hauled to the point of use of the concrete, and to deliver the mixed material substantially at any point desired. The apparatus is also capable of being used not only as a mixer and as a car but also as a bucket.

\Vhile my improvements may be embodied in different forms of apparatus, I prefer, as illustrated in the accompanying drawings, to use' a rotatable hollow body having car-wheels. surrounding and secured thereto, this constituting a car, having a plurality of discharge and filling openings therein, and doors for said openingsthus providing a car which may readily be filled at any point of its travel, be emptied at any point of its travel, and, when desired, lifted from the track, and'its contents dumped at any desired point.

Referring to the accompanying drawings, Figure 1 shows a rear view (partly broken away) of my improved apparatus; Fig. 2 is an end view thereof; Fig. 3 is a fragmentary detail, showing the manner of attaching a wheel to the car; and Fig. 4 is a sectional view, on the line AB of Fig. 1, through a door and its housing.

The apparatus comprises a pair of conical casings P having smaller ends pointing inwardly and rigidly secured to a drum J. Flanged wheels C are secured to the curved sides of the casing by means of angular plates H (Fig. 3) riveted to said curved sides and to the wheels, the wheels being adapted to support the apparatus and permit it to be rolled on the track 0, as for instance, by means of a rope or cable N wound about the drum J and drawn in any convenient manner. The flared outer ends of the drums are closed by circular end plates G provided with approximately sector-shaped openings covered by outwardly swinging doors F hinged, as at R, to the castings K on the end plates G of theapparatus.

At the side edges of each door are secured inwardly projecting guide-plates D which together with the door form a'receiving hopper when the door is in uppermost position, and a discharge chute when the door is in lowest position, both as shown clearly in Fig. 1. The guide-plates D are inclosed and protected by housings E secured to the end plates G and projecting inwardly from said plate along the periphery of the drum, these housings serving also as mixing blades who the apparatus is rotated by being roll d upon the track 0.

In Fig. 4 the space between the plate D and housing E is shown exaggerated but in practice this is made to fit snugly so that the joint between the two may be Watertight to prevent the leakage of the water ingredient of the concrete when it is introduced into the casing.

The angular plates H may be provided with suitable openings for receiving the hooks of the hoisting chain M, or they may consist of segments between which the hooks may be received.

The operation of the device is as follows: The apparatus is placed with one of its doors F uppermost and this door opened to form a hopper into which the unmixed ingredients of the concrete or other desired material is introduced, as from the chute L, all of the doors F except the uppermost being closed. Either or both of the casings may be filled in this manner. Then all of the doors are closed and the apparatus rolled upon'the track 0 to the point of discharge, the rotation of the casings and the revolution of the housings E causing the ingredients to be thoroughly mixed during transit.

If the concrete is to be discharged at a point at the side of the track, the apparatus is rolled until the lowermost door F is at or near this point and the door opened, thus discharging the material as shown in Fig. 1. If the concrete is to be discharged at a point some distance from the track, the apparatus is rolled to a convenient point on the track and then hoisted to the desired point by means of the hooks and chain M and a suitable crane or other hoisting device. The apparatus may be used also for Patented May 9, 1916.

transporting already mixed concrete, in

which case the rotation of the casings pre-.

' I claim:

1. A concrete mixer comprising a rota-.

table conical casing provided with a plurality of" openings near the most eccentric part of the larger end portion; outwardly swinging doors, one for each opening, and each rotatable with the casing and hinged thereto at the edge of the door nearest the axis of the casing. 2. A concrete mixer comprising a rotatablecasing adapted for horizontal rolling displacement and having an eccentrically arranged opening in the end thereof; and a door for said opening hinged at its inner edge to and rotatable withsaid casing and adapted to serve as a hopper to direct material into the casing when said opening is uppermost.

3. A concrete mixer comprisinga freely rolling rotatable casing having an inclined bottom adapted to direct material to an end of the casing, the casing being provided with openings in the most eccentric part of said end; and outwardly swinging doors one for each opening hinged to the casing and at the 80 inner edge of the door and rotatable within the casing.

4. A concrete mixer comprising a freely 'rollable' casing havinga part adapted to deflect material toward an end of the casin an eccentrically arranged opening in said end; a door for saidopening; and wheels between the ends of the casing.

5. A concrete mixer comprising a rotatable freely rolling casing having a conical 40 part adapted todefiect material toward an end of the casing; anopening near the most eccentric part of said end; a door for said 0 ening. and rotatable with the casing; and

. wieels co-axial with the casing and disposed between the ends thereof.

6. A concrete mixercomprisinga pair of co-axial conical casings having their smaller ends secured together and each provided with a plurality of openingsin the most ee- 60. centric part of their outer ends; and out" wardly swinging doors, one for each open ing, each rotatable with the casing and hinged to it at the edge of the door nearest the axis of the casings and a pair of wheels 56 placed around the casing intermediately of the ends thereof. i

7. A concrete-mixer comprising a rotatable body having .an eccentric opening in the end thereof, and a door fitted to said open- 60 m said door being bin (1 rotatable to the 31 along the edge of t e door nearest the axis of rotation of the bod and provided with plates, for guidingthe ischarging concrete when th is at its lowermost e opemn 86 position and 'for guiding the entering inand an outwardl ends pointing inwardly; wheels secured to and co-axial with the casings; end plates seso cured to and closing the outer'ends of the casings and provided with eccentric openings; and outwardly opening doors hinged to the edges of the respective openings.

10. In a concrete mixer, the combination 86 of a pair of horizontally disposed substantially cone-shapedcasings having their smaller ends pointing inwardly; a drum fastened between said inner ends and holding the casings in alinement; wheels secured to 90 and co-axial with the casing; end plates secured to and closing the outerends of the casings and provided with eccentric openings; and outwardl opening doors hinged to the inner edges 0 the respective openings. 11. In a concrete mixer, the combination of a pair of horizontally disposed truncated cone-shaped casings having their smaller ends pointing toward each other; a drum fastened to and interposed between said smaller ends and holding said casings and 'drum in alinement; wheels disposed around the intermediate art of said casings co-axial therewith; end p ates secured to and closing the outer ends of said casings and having approximately sector shaped openings therein remote from the axis of the casings; and outwardly opening doors adapted to cover said doors and hinged at the inner edges of the openings.

12. A concrete-mixer comprising a rotatable body having an eccentric o mugin the end thereof, housings exten g'into said body and constituting mixing blades,

swinging door fitted to the said end an formed to movably fit within the housings aforesaid 13. In a concrete mixer, the combination of a rotatable casin having an opening in the end thereof; a floor for said opening; 1 inwardly projecting guide plates on said door; and mixers on the inner face of said end and projecting into the casing and formmg protections for the guide plates when the door is closed.

14. In a concrete mixer, the combination of a rotatable casing; end plates secured thereto having openings therein; oombmed housings and mixers of approximately U-shaped cross-section secured to the side edges of said openings and outwardly opening doors for said openings; and guide plates secured to said doors and slidable on said housings respectively.

15. In a concrete mixer, the combination of a rotatable casing provided with openings; outwardly opening doors for said openings and hinged to said rotatable casing; inwardly projecting guide plates on said doors; and mixers secured to said casing and adapted to receive said plates when the doors are closed.

16. In a concrete mixer, the combination of a rotatable casing having openings in the ends thereof; outwardly opening doors hinged at their inner ends to said casing and forming covers for said openings respectively; and guide plates on the inner faces of said doors and perpendicular thereto, and forming hoppers when the doors are opened.

17. In a concrete mixer, the combination of a pair of horizontally disposed substantially cone shaped casings having their smaller end turned inwardly and secured together; wheels dis osed about the casings; end platessecure to the larger ends of thecasings and provided with openings near the edge thereof; outwardly opening doors for said openings and hinged at their inner ends; guide plates on the sides of said doors and projecting inwardly into the casing; and mixers secured to the inner face of said ends and projecting inwardly into the easing and adapted to receive said guide plates when the doors are closed. I

18. In a concrete mixer, the combination of a pair of horizontally disposed substantially cone shaped casings having their smaller end turned inwardly and secured together, wheels disposed about the casings; end plates secured to the larger ends of the casing and provided with openings near the edge thereof; outwardly opening doors for said openings and hinged at their inner ends; guide plates on the sides of said doors and projecting inwardly into the casing; and mixers secured to the inner face of said ends and projecting inwardly into the easing and adapted to formprotections for said plates when the doors are closed.

19. In a concrete mixer, the combination of a pair of horizontally disposed truncated cone shaped casings having their smaller ends pointing toward each other; a drum fastened to and interposed between said smaller ends and holding said casings and the drum in alinement; wheels disposed about the intermediate part of said casings co-axial therewith; end plates secured to and closing the outer ends of said casings and having approximately sector shaped openings therein; combined housings and mixers of ap roximately U-shaped cross sections secure to the inner face of said end plates perpendicular thereto, at each side edge re spectively of said openings; a spider at the center of each end plate; doors, one for each opening, hinged to said spider and covering said openings respectively; and end plates secured to the side edges of said plates perpendicular to the plates and slidably received in the housings.

In testimony whereof, I have signed .my name to this specification in the presence of two subscribing witnesses.

RUDOLPH WELCKER.

Witnesses:

W. H. BERRIGAN, M. KILPATRIOK. 

